1995 TOYOTA SUPRA Service Repair Manual

Page 33 of 2543

TOYOTA SUPRA 1995  Service Repair Manual INSPECTION PROCEDURE
(See page AC±26).
(See page IN±30)
Check voltage between terminals TE and SG of A/C amplifier connector.
Check and replace A/C amplifier.
Repair or replace harness or connector.

Page 34 of 2543

TOYOTA SUPRA 1995  Service Repair Manual Blinking Light F D Engine Coolant Temperature Sensor Circuit
CIRCUIT DESCRIPTION
This sensor detects the coolant temperature and sends the appropriate signals to the A/C amplifier.
These signals are u

Page 35 of 2543

TOYOTA SUPRA 1995  Service Repair Manual INSPECTION PROCEDURE
(See page AC±26).
(See page IN±30)
Check voltage between terminals TW and SG of A/C amplifier connector.
Proceed to next circuit inspection shown on matrix
chart (See page AC±2

Page 36 of 2543

TOYOTA SUPRA 1995  Service Repair Manual Blinking Light DEF Solar Sensor Circuit
CIRCUIT DESCRIPTION
A photo diode in the solar sensor detects solar radi±
ation and sends signals to the A/C amplifier.
Diagnostic Sensor Check Detecting Condi

Page 37 of 2543

TOYOTA SUPRA 1995  Service Repair Manual (See page IN±30)
Check and replace A/C amplifier.
Repair or replace harness or connector.
Check harness and connector between A/C amplifier and solar sensor
(See page 
IN±30).
Replace solar sensor.

Page 38 of 2543

TOYOTA SUPRA 1995  Service Repair Manual Blinking Light A C Compressor Lock Sensor Circuit
CIRCUIT DESCRIPTION
This sensor sends 1 pulse per engine revolution to the A/C amplifier. If the number ratio of the compres-
sor speed divided by the

Page 39 of 2543

TOYOTA SUPRA 1995  Service Repair Manual INSPECTION PROCEDURE
(See page AC±26).
(See page IN±30).
Repair or replace harness or connector.
Replace compressor lock sensor.
Check for open and short harness and connector between A/C amplifier

Page 40 of 2543

TOYOTA SUPRA 1995  Service Repair Manual Blinking Light FRS Pressure Switch Circuit
CIRCUIT DESCRIPTION
The pressure switch sends the appropriate signals to the A/C amplifier when the air conditioning refrig-
erant pressure drops too low or